Pump



, A 1,635,148 .July 5 1927 lc. cHAMBER A PUMP y i Filed March 6, l192e ssheets-sheet 1 Strom,

July 5, 1927. 1,635,148

c. l. CHAMBERS v PUMP Filed Maron 192s :s sheets-sheet 2 s ,5 y I Z fr111;] x zi@ 49 27221..:5-4

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` cumulated operation of Patented July 5, 1927.

i CHARLES I. CHAMBERS, 0F SEATTLE, WASHINGTON.

PUMP.

vApplication led March 6, 1926. SeraltNo. 92,766.

The invention relates toV an improvement in pumps of the submerged typeand operating under iiuid pressure. rlhe principal object of theinvention is to prevent wastage of power by prevent-ing the admission ofthe air under pressure to the pumpuntil the -water or other fluid hasactherein to a certain extent, thus preventing attempted operation ofthe pump in the absence of suiiicient water! or other fluid therein forpumping purposes. A.- further object is the utilization of the waterlevel within the pump proper as a means for limiting the pumping orejectmg a particular cycle, whereby a .maximum discharge is insured'inall operations. Y

1 The invention panying drawings,

Fig. 1 is a plan pump. l y

Fig. 2 is a section of a portion of the pump taken -on the line 2--2 ofFig. 1.

Fig. '3 is a vertical section of the pump is illustrated in the accom`Vin which:

view of the improved taken on the line 3-3 of Fig. 1, the parts beingshown in normal positions, that is, the posit-ions assumed while wateror other fluid is accumulating in the pump cylinder. Fig. 4 is a view-lsimilar to Fig. 3, with the parts in pumping position.

The improved pump is. made up of two main parts, a cylinder 1 and avalve section 2. rlhe cylinder 1 comprises a cylindrical bodyofappropriatelength in diameter having an inlet 3- inthebottom,controlled by a gravity valve 4, slidably mounted upon a stem 5and limited inmovement by the head 6` of the stem. Thus when submerged,and in the absence of pressure within the cylinder, the valve 4 opens tofreely admit the -surrounding liquid to the interior of the cylinder.

The valve section 2, which is in the form of a casting, has a base 7,which is removably secured in aI fluid tightmanner to the upper end ofthe cylinder 1 by threaded bolts 8. This casting is interiorly 'formedimmediately above the base and to one side of the center thereof with anair exhaust or discharge passage 10,*vvhich communicates with theinterior of the cylinder through a port 9 formedv in the base. Thatportion of the base surrounding the port 9 on the cylinder side of thebase is formed to provide a valve seat 11, and a -valve 12 is arrangedto close this port from the cylinder side,v

The valve 12 is Aprovided with a stem 13 which extends upwardly in thecasting and seats loosely in a sleeve 14 depending from an enlarged headplate 15-and guided in a projection 16 rising from the upper wall 17 ofthe discharge passage 10, a spring 18 surrounding the guide 16 andbearing between the wall 17 and the head 15, and normally holding theplate '15 at its upper limit of movement. The plate 15 overlies theupper wall of the casting proper, which throughout the area of the plateis formed to present a concave depression 19, and the plate 2O issecured to the casting overlying and closf ingl this depression to forma pressure'chamber 21. Between the plate 2O and the correspondingv edgeofthe concave depression 19, there is arranged a flexible diaphragm 22which overl'ies and at all ltimes bears on'the valve plate 15.

The valve section 2 beyond the plate 2O is formed for the reception orconnection of the service pipes, such as a ywater discharge pipe 23,which extends through the valve section and into the cylinder 1,terminating above the lower end of the cylinder; an air discharge orexhaust pipe 24 which extends into. the valve v'casing and is in opencommunication with'the exhaust passage 10; and an air pressure pipe 25suitable sourceof air under pressure to and within. the valve sectionbelow the exhaust l passage 10.

Theair pressure pipe 25 opensinto a valve chamber 26 in the base 7l ofthe valve section, communicating with such chamber through va. pluralityof openings 27 formed in abushing 28 Vfor the chamber. A sliding valve29 having an annular channel 30 is slidable in the'bushing, andobviously when in line with the openings 27, will cut oft communicationbetween the air pressure pipe and the Vcylinder 1, while when the valveis raised above the openings 26, the air under pressure fromy the pipe25 may freely enter the cylinder. The outlet from the `valve chamber 26to the cylinder 1, is normally closed by a platel, and a pipe 32 extendsthrough the plate to establish communication between the valve chamberand cylinder, the specific function ofvthis pipe being later described.

The-valve section 2 is formed near one edge with' a passage whichextends through rleading froml any y movement of the lever 37.

of the concave depression 19 and through a registering passage 84 in theplate 20, opening through the bottom of said plate above the diaphragmV22. Pressure admitted through this passage 38 therefore will act o-nthe diaphragm to depress the valve plate and thereby open the valve 12,under certain conditions to be explained.

The valves 12 and 29 are provided with extensions and 35 respectively,which connected to a lever 37 pivoted at one end at 38 to an extension39 depending from the base 7 of the valve section 2. To the lower sideof the lever 37 is secured a pan el() of appreciable depth, fully o ienat the bottoni, but otherwise closed. The pipe 32, forming an extensionof the pressure inlet, leads to and opens within the pan 40. ln thelower portion of the cylinder 1 is arranged a valve operator in the formof a pan-like vessel Ll1 open at the top and otherwise closed, supportedfor pivotal movement at 4&2 relative to a fixture L13 projectingfrom-the cylinder, and counterbalaneed by a weight 1M. The balance pan4.1 is connected by a rod to a lever 4-6 pivotal-ly supported on thelower side of the base 7 of the valve section 2 and provided at anappropriate point with a valve disc 47 adapted to control the pas-V .if99 sage ou.

'il he chamber above the diaphragm 22 has I anormally open bleed passage4&8V leading to the air exhaust pipe 2e, balance bleed openings 49 beingformed between the chamber 21 and the exhaust passage and between theinterior of the sleeve 14; and the chamber 21.

Normally, the valve 29 will be in position to cut off air pressureadmission to the cylinder and the valve 12 will bc in open posi tion toestablish communication between the air exhaust and the cylinder, theposition of these valves being incident to the gravital Assuming thepump submerged in the water to be pumped, valve l opens and water fillsthe cylinder until closing the open end of the pan 10. Under thepressure on the air trapped in this pan, the further accumulation ofwater moves the pan upwardly, closing the valve 12 Yand opening thevalve 29. Air under pressure is admitted to the surface of the waterwithin the cylinder, acting in the usual way to force said water throughthe discharge pipe 23. the level of the water falls incident to thisdischarge, the level recedes below the pan 41, which being open at thetop is left filled with water. This over-balances the weight 411, opensthe valve 4:7, permits the pressure to enter above the valve diaphragm`and by reason of the greater area of the valve plate 15 ,to depress andopen the valve 12. This movement of course depresses the lever 37 andcuts'ofl the admission of air pressure byV closing the valve 29. Freeescape ofthe pressure is thus permitted, and on a balance being reached,water again flows into the cylinder 1, restoring the balance pan tonormal position, closing the valve 47, and the cycle of operationsdescribed is repeated.

It is to be noted that the apparatus as a whole is particularlyeconomical as tothe use of power. Under ordinary conditions, the actionof the pan l0 under the incoming water would be slow, and hence therewould be some wastage of power of the incoming air. livered to theinterior of the pan above the level of the water therein, or at leastsubstantially at the level of the water therein, the effect of this airis to cause an unusually' quick movement of the pan 40, the rapidclosing of the valve 12v, and the consequent loss, of little, `if any,of the pressure. Of course, it is understood that the pressure beinginitially delivered in thersealed pan i0 will tend to insure closing ofthe valve 12 before suchair percolates through the water to the surfacethereof around the pan.

TWhat is claimed as new, is v it pressure pump of the submergedtype,`including a cylinder having a water inlet, a water discharge pipeleading therefrom,'.an air ,pressure inlet, an 'air discharge outlet,

.valves for said inlet and outlet, a'lever 'for operating the valves,and an open pan adapted toA be sealed4 by the water in theV cylinder anddesigned' to A'receive the airY pressure from the inlet, said pan beingconnected to and operating 'said lever. I i

'ntestimony whereof I anix my signature.

onannns i. criar/linens..

As such air vpressure however, is deV

